It's been nearly nine months since Heidi Montag and Spencer Pratt hosted an event together in Las Vegas, but now that they've reconciled, what better kind of party to throw than one for Halloween! On Saturday night, the happy couple posed (and PDA-ed) on the carpet together at PURE nightclub. Spencer dressed as an alien while Heidi went sans costume--but she did make a point to cover her cleavage with her hair. Perhaps this is the sign of a new, more modest Heidi?

+ Are you happy to see the former "Hills" lovahs back at it, or have you had enough of them parading their relationship around? Sound off in the comments!